Recording of myself as a grumpy old man, recorded at normal speed, no effects except noise reduction. Recorded at home on conexant smart audio with at2020 usb mic, processed thru audacity.
I've been to some old massive limekilns and it's like a cave inside with lots of water dripping from the ceiling. There was also a draft coming through the whole building. And there's a leak in the wall. That's the water you hear streaming.